US3064089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Waterproof inertial type microphone
Assignee: Individual
•
Filing: 1960-06-24
•
Granted: 1962-11-13
•
Expires: 1980-06-24
Abstract
No abstract record available.
Inventors
- 👤 Donald P Ward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:30
CPC Classifications
H; H04; H04B; H04B11/00; H04M; H04M1/00; H04M1/02; H04M1/04; H04M1/05; H04R; H04R21/00; H04R21/02; H04R21/021
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US593255A
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DE756614C
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US2225488A
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US2239550A
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US2340777A
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US2398076A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-12 | 1966-05-14 | 1966-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-12 | 1970-05-14 | 1970-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-12 | 1974-05-14 | 1974-11-13 | $7700.00 | Window Closed / Lapsed |